Uranus

Retired multicollector mass spectrometer designed for the isotopic analysis of uranium in uranium hexafluoride (UF6).

• Status: Inactive
• Country: Germany
• Isotopic: Yes
• Analyte Type / Target Of Analysis: Uranium (only)
• Measurable Isotopes/Elements: Uranium isotopes
• Analyzer Type
  : Magnetic Sector MS
• Ion Source Type: Crossbeam
• Signal Stability / Relative Standard Deviation
  : <0.01%for isotopic ratio reproducibility
• Inlet Types: Automated sample and standard introduction system with cryogenic traps
• High Resolution
  : Yes
• Mass Resolution/ Mass Resolving Power
  : ≥750
• Multicollector
  : Yes
• Collectors Qty
  : Four Faraday cups and one Secondary Electron Multiplier (SEM)
• Sensitivity
  : UF6 consumption <1 mg/h at 6×10−10 A ion current
• Abundance Sensitivity
  : <10−5
• Precision
  : < 0.02% external precision for 235U / 238U - ratio; < 0.01% (1 σ) for the ratio of 235U / 238 natural Uranium
• Detector Type
  : Faraday detectors and SEM
• Possible Amplifiers
  : 10¹⁰, 10¹¹, and 10¹² Ω resistors with dynamic range up to 50 V
• Background
  : Memory effect factor <1.003
• Geometry Type
  : Double-focusing stigmatic geometry
• Focusing Type
  : Magnetic and electrostatic focusing
• Magnetic Sector Radius/ Angle
  : 81 cm radius
• Cooling System
  : Water-cooled vacuum system and cryogenic traps
• Vacuum System
  : High-capacity turbomolecular pumps and ion-getter pumps; cryogenic cooling for sample handling
• Gas Supply: Uranium hexafluoride (UF6)
• Power Specifications: 230/400 V, 50/60 Hz, approx. 11 kVA
• Environmental Specifications: Temperature: 18–30°C; Humidity: 20–70%, non-condensing